The humanities and body stuff get short shrift. And they have the highest impact when you inhale them young. So take up meditation. Make dancing something you do often. Hack things with your hands. Sing. Sing while bicycling. Play the harmonica with soul. Perform your poetry to others. Hug, kiss, and shake hands with enthusiasm. Find people that make you uncomfortable and talk with them. Learn a non-european language…
Academically, professionally, it's all worked out fine- just do what you do, me-of-the-past.
But I would that I had invested a bit more effort into music, culture, arts- and a lot more effort into health & exercise. I basically wrote off physical fitness, which was a huge mistake.
FWIW I'm not the rotund sort, in fact the opposite, skinny as a bean pole in school and it developed a lot of bad habits that I am still correcting and hurt my overall performance & success (being terribly underweight dulls the mind...) I really should have developed a bit more cardio & a lot more muscle.